/*
 * $AIST_Release: 0.9.0 $
 * Copyright 2011 Information Technology Research Institute, National
 * Institute of Advanced Industrial Science and Technology
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *    http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package util

import java.io.ByteArrayInputStream
import java.io.ByteArrayOutputStream
import java.io.ObjectInputStream
import java.io.ObjectOutputStream
import java.io.InputStream
import java.io.ObjectStreamClass

private class ClassLoaderObjectInputStream(in: InputStream, cls: List[ClassLoader]) extends ObjectInputStream(in) {
  override def resolveClass(cd: ObjectStreamClass): Class[_] = {
    for (cl <- cls) {
      try {
        val c = cl.loadClass(cd.getName())
        return c
      } catch {
        case cnf: ClassNotFoundException =>
          ; /* Ignore */ 
      }
    }
    super.resolveClass(cd)
  }
}

/**
 * Java Object Serializer
 */
object ObjectSerializer {
  /**
   * Serializes object.
   */
  def serialize(o: AnyRef): Array[Byte] = {
    val bos = new ByteArrayOutputStream()
    val out = new ObjectOutputStream(bos)
    out.writeObject(o)
    out.flush()
    return bos.toByteArray()
  }

  /**
   * deserializes object.
   */
  def deserialize(bytes: Array[Byte], cls: List[ClassLoader] = List()): AnyRef = {
    return new ClassLoaderObjectInputStream(new ByteArrayInputStream(bytes), cls).readObject()
  }
}
